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Find the 13th term of the geometric sequence 4,12,36,108.

User Tushan
by
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2 Answers

3 votes

Answer: 2125764

Step-by-step explanation: The geometric sequence "formula" states that to find any term in the sequence, the shown formula must be used:


a_(n) = a_(1)r^(n-1)

Where r is the common ratio between each term. In this case, 3. If we want to find the 13th term, 13-1 = 12, 3^12 = 531441, and 531441*4 = 2125764.

User Crig
by
8.1k points
4 votes

Answer:2125764

Explanation:

q=12/4=3

b13=b1*q^12=4*3^12=2125764

User Mmmries
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8.2k points